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2011 Southwest Blackout
The 2011 Southwest blackout, also known as the Great Blackout of 2011, was a widespread power outage that affected the San Diego–Tijuana area, southern Orange County, Imperial Valley, Mexicali Valley, Coachella Valley, and parts of Arizona. It occurred on Thursday, September 8, 2011, beginning at about 3:38 pm PDT, and was the largest power failure in California history. Background At the time of the 2011 blackout, San Diego Gas & Electric (SDG&E, a subsidiary of Sempra Energy) was connected to Arizona by the Southwest Power Link, which is a single 500 kV power line (the next year, SDG&E completed a second line, the 500 kV Sunrise Power Link which was under construction during the event but still, it only parallels the Southwest Power Link and connects back to it at Imperial Valley; the remaining section into Arizona is still a single line). There is no other interconnection at the 500 kV level between SDG&E and other adjacent utilities. Rather, SDG&E is interconnected t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southwest Blackout Of 2011
The 2011 Southwest blackout, also known as the Great Blackout of 2011, was a widespread power outage that affected the San Diego–Tijuana area, southern Orange County, Imperial Valley, Mexicali Valley, Coachella Valley, and parts of Arizona. It occurred on Thursday, September 8, 2011, beginning at about 3:38 pm PDT, and was the largest power failure in California history. Background At the time of the 2011 blackout, San Diego Gas & Electric (SDG&E, a subsidiary of Sempra Energy) was connected to Arizona by the Southwest Power Link, which is a single 500 kV power line (the next year, SDG&E completed a second line, the 500 kV Sunrise Power Link which was under construction during the event but still, it only parallels the Southwest Power Link and connects back to it at Imperial Valley; the remaining section into Arizona is still a single line). There is no other interconnection at the 500 kV level between SDG&E and other adjacent utilities. Rather, SDG&E is interconnected t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Diego County
San Diego County (), officially the County of San Diego, is a county in the southwestern corner of the U.S. state of California. As of the 2020 census, the population was 3,298,634, making it California's second-most populous county and the fifth-most populous in the United States. Its county seat is San Diego, the second-most populous city in California and the eighth-most populous city in the United States. It is the southwesternmost county in the 48 contiguous United States, and is a border county. It is also home to 18 Native American tribal reservations, the most of any county in the United States. San Diego County comprises the San Diego-Chula Vista-Carlsbad, CA Metropolitan Statistical Area, which is the 17th most populous metropolitan statistical area and the 18th most populous primary statistical area of the United States as of July 1, 2012. San Diego County is also part of the San Diego–Tijuana transborder metropolitan area, the largest metropolitan area shar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palo Verde Valley
The Palo Verde Valley (Spanish: ''Valle de Palo Verde'') is located in the Lower Colorado River Valley, next to the eastern border of Southern California with Arizona, United States. It is located on the Colorado Desert within the Sonoran Desert south of the Parker Valley. Most of the valley is in Riverside County, with the southern remainder in Imperial County. La Paz County borders to the east on the Colorado River. The region is the ancestral home of several Native American tribes: the Quechan, the Chemehuevi and Matxalycadom or Halchidhoma, some who have Indian reservations in California and Arizona along the Colorado and Gila Rivers today. Geography The Palo Verde Valley is part of the Sonoran Desert's Colorado Desert. The Big Maria Mountains are north of the valley, and the Colorado River forms the valley's boundaries to the east and south. Other mountains nearby are the McCoy Mountains to the west (north in Interstate 10), the Chocolate Mountains to the south, the Litt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blythe, California
Blythe is a city in eastern Riverside County, California, United States. It is in the Palo Verde Valley of the Lower Colorado River Valley region, an agricultural area and part of the Colorado Desert along the Colorado River, approximately east of Los Angeles and west of Phoenix. Blythe was named after Thomas Henry Blythe, a San Francisco financier, who established primary water rights to the Colorado River in the region in 1877. The city was incorporated on July 21, 1916. The population was 18,317 at the 2020 census. History Etymology Blythe was named after Thomas Henry Blythe, a San Francisco businessman and entrepreneur. Mr. Blythe established primary water rights to the Colorado River in the southwestern California region in 1877. The town was originally named Blythe City, by Thomas Blythe himself, but the name was shortened to simply ''Blythe'' around the time the first post office was opened in 1908. Early years In the early or mid-1870s, William Calloway (kn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North County
North County is a region in the northern area of San Diego County, California. It is the second-most populous region in the county (after San Diego), with an estimated population of 869,322. North County is well known for its affluence, especially in Encinitas, Carlsbad, Del Mar, Rancho Santa Fe, and Solana Beach, where house prices range, on average, above $1,000,000. Cities along the 78 freeway ( Oceanside, Vista, San Marcos and Escondido) have more mixed incomes. Beach culture is prominent in the area, and many of the region's beaches and lagoons are protected areas to help ensure the environment remains pristine, though there has been pressure from commercial entities to develop some of these areas. History The name dates to at least the 1970s, when many of the communities in the area were yet to become incorporated cities and local community decisions were made away at the county seat. The North County section of San Diego County has historically been the most expensive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interstate 15 In California
Route 15, consisting of the contiguous segments of State Route 15 (SR 15) and Interstate 15 (I-15), is a major north–south state highway and Interstate Highway in the U.S. state of California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ..., connecting San Bernardino County, California, San Bernardino, Riverside County, California, Riverside, and San Diego County, California, San Diego Counties. The route consists of the southernmost of Interstate 15, I-15, which extends north through Nevada, Arizona, Utah, Idaho, and Montana to the Canada–United States border, Canada–US border. It is a major thoroughfare for traffic between San Diego and the Inland Empire, as well as between Southern California, Las Vegas, Las Vegas, Nevada, and the Intermountain West ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interstate 5 In California
Interstate 5 (I-5) is a major north–south route of the Interstate Highway System in the United States, stretching from the Mexican border at the San Ysidro crossing to the Canadian border near Blaine, Washington. The segment of I-5 in California runs across the length of the state from San Ysidro to the Oregon state line south of the Medford- Ashland metropolitan area. It is the longest interstate in California, and accounts for more than half of I-5's total length. It is the more important and most-used of the two major north–south routes on the Pacific Coast, the other being U.S. Route 101 (US 101), which is primarily coastal. I-5 links the major California cities of San Diego, Santa Ana, Los Angeles, Stockton, Sacramento, and Redding. The San Francisco Bay Area is about west of the highway. I-5 is known colloquially as "the 5" to Southern California residents and "5" to Northern California residents due to varieties in California English. I-5 als ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tijuana
Tijuana ( ,"Tijuana" (US) and ), known also by the initials T.J., is a city and municipal seat of , , located on the . It is part of the San Diego-Tijuana metro area and the larger [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Diego Trolley
The San Diego Trolley is a light rail system operating in the metropolitan area of San Diego. It is known colloquially as "The Trolley". The Trolley's operator, San Diego Trolley, Inc. (SDTI), is a subsidiary of the San Diego Metropolitan Transit System (MTS). The Trolley began service on July 26, 1981, making it the oldest of the second-generation light rail systems in the United States. The Trolley system serves 62 stations, comprises of route, three primary lines ( Blue Line, Orange Line, and Green Line) that operate daily, and one heritage line ( Silver Line) that operates on a circuit of downtown on select days. In , the Trolley had the fifth highest ridership of light rail systems in the United States, with annual rides, or about per weekday as of . History Early history Electric rail service in San Diego traces its roots back to 1891 when John D. Spreckels incorporated the San Diego Electric Railway. San Diego's streetcar system had been replaced with buses ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Downtown San Diego
Downtown San Diego is the city center of San Diego, California, the eighth largest city in the United States. In 2010, the Centre City area had a population of more than 28,000. Downtown San Diego serves as the cultural and financial center and central business district of San Diego, with more than 4,000 businesses and nine districts. The downtown area is the home of the San Diego Symphony and the San Diego Opera as well as multiple theaters and several museums. The San Diego Convention Center and Petco Park, home of the San Diego Padres, are also located downtown. Downtown San Diego houses the major local headquarters of the city, county, state, and federal governments. History The downtown of San Diego was previously inhabited by the Kumeyaay who referred to the area as Tisirr, and also established a village called Pu-Shuyi near what is now Seaport Village. The city of San Diego was originally focused on Old Town near the Presidio, several miles north of current Downtown. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Regulatory Commission
The Nuclear Regulatory Commission (NRC) is an independent agency of the United States government tasked with protecting public health and safety related to nuclear energy. Established by the Energy Reorganization Act of 1974, the NRC began operations on January 19, 1975, as one of two successor agencies to the United States Atomic Energy Commission. Its functions include overseeing reactor safety and security, administering reactor licensing and renewal, licensing radioactive materials, radionuclide safety, and managing the storage, security, recycling, and disposal of spent fuel. History Prior to 1975 the Atomic Energy Commission was in charge of matters regarding radionuclides. The AEC was dissolved, because it was perceived as unduly favoring the industry it was charged with regulating.John Byrne and Steven M. Hoffman (1996). ''Governing the Atom: The Politics of Risk'', Transaction Publishers, p. 163. The NRC was formed as an independent commission to oversee nuclear ene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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